/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * License); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * AS IS BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

/*
 * Copyright (c) 2017, Open AI Lab
 * Author: haitao@openailab.com
 */
#include "operator/fully_connected.hpp"
#include "static_graph.hpp"

namespace TEngine {


bool FullyConnected::InferShape(const std::vector<TEngine::TShape>& ishape, std::vector<TEngine::TShape>& oshape)
{
     const TShape& input=ishape[0];
     const TShape& weight=ishape[1];


     int m=input.GetN();
     int input_k=input.GetW()*input.GetH()*input.GetC();

     int n=weight.GetH();
     int k=weight.GetW();


     if(k!=input_k)
          return false;

     TShape shape;

     std::vector<int> dim={m,n,1,1};

     shape.SetDim(dim);
     shape.SetDataLayout("NCHW");

     oshape[0]=shape;
 
     return true;    

}

float FullyConnected::GetFops(const std::vector<TShape>& inputs, const std::vector<TShape>& outputs)
{
     const TShape& input=inputs[0];
     const TShape& weight=inputs[1];


     int m=input.GetN();

     int n=weight.GetH();
     int k=weight.GetW();

     float fops=m*n*k*2;

     return fops;
}


void FullyConnected::SetSchema(void)
{
    Input({"input:float32","weight:float32","bias:float32"})
    .Output({"output:float32"})
    .SetLayout("NCHW")
    .SetAttr("num_output",10)
    .SetDoc(R"DOC(Fully Connected Operator)DOC");
}


} //namespace TEngine
